BIOL 4374 -Exam 2 questions with answers

BIOL 4374 -Exam 2 questions with answers

Ribosomes: - CORRECT ANSWERS ✔✔-composed of 2
ribonucleoprotein complexes


-RNA makes up 2/3


-RNA carries out most catalytic functions


-present in all living things


How is the initiator tRNA different from all other tRNAs? -
CORRECT ANSWERS ✔✔-No bound amino acid


-anticodon complementary to start codon


-binds to large subunit before mRNA


-only in prokaryotes


How does DNA mismatch repair system repair ONLY the
new synthesized strand? - CORRECT ANSWERS

, ✔✔contains "nicks" left over from lagging strand
synthesis


Medelson & Stahl experiment proved DNA replication is: -
CORRECT ANSWERS ✔✔semi-conservative


Which RNA polymerase responsible for transcription of
eukaryotic DNA encoding protein - CORRECT ANSWERS
✔✔RNA polymerase II


Subunit of prokaryotic RNA polymerase that recognizes
promoter sequence: - CORRECT ANSWERS ✔✔Sigma
Factor


Kozak sequences: - CORRECT ANSWERS ✔✔eukaryotic
ribosomal binding sites


DNA polymerase synthesizes DNA in the _____ direction. -
CORRECT ANSWERS ✔✔both strands 5' to 3'


How does alternative splicing increase structural diversity
of proteins produced by single gene - CORRECT ANSWERS
✔✔by skipping some exons from mature mRNA